<?php
include_once('etc/vars.php');

// ******************************************************************
// MISCELLANEOUS BLOCKS
// Blocks Available:
//  - blockPageNavigation
//    (Gets navigation links for a inputted list.)
//  - blockBookFormats
//    (Gets box of formats available for inputted book.)
//  - blockAuthorBooks
//    (Gets list of books by author of inputted book.)
// ******************************************************************


// **** blockPageNavigation Function ****
// Input: PageType, RowStart, ModifierType , ModifierValue
// Output: To screen
// Description: Prints Page Navigation, for books, authors, categories, or formats,
//              with modifiers (filters) available for books (books of a particular
//              author, etc).
function blockPageNavigation($pageType, $rowStart, $modifierType = NULL, $modifierValue = NULL)
{
  global $displayLimit;

  //For Debugging
  //print "PageType: $pageType<br>RowStart: $rowStart<br>ModifierType: $modifierType<br>ModifierValue: $modifierValue";

  switch ($pageType)
  {
    case 'a': // Author
        $linkName = "author.php";
        $itemRecordset = getAuthorCount();
        break;
    case 'b': // Book
        $linkName = "book.php";
        switch ($modifierType)
        {
          case 'a': // Author
              $itemRecordset = getBookCount($modifierValue);
              break;
          case 'c': // Category
              $itemRecordset = getBookCount(NULL, $modifierValue);
              break;
          case 'f': // Format
              $itemRecordset = getBookCount(NULL, NULL, $modifierValue);
              break;
          default:
              $itemRecordset = getBookCount();
        }
        break;
    case 'c': // Category
        $linkName = "topic.php";
        // $itemRecordset = getBookCount();
        break;
    case 'f': // Format
        $linkName = "format.php";
        // $itemRecordset = getBookCount();
        break;
  }

  print '<div class="navigation">';

  // Display the Previous Button
  if ($rowStart <> 0)
  {
    print '<a href="' . $linkName . '?s=' . ($rowStart - $displayLimit) . '">Previous</a> ';
  }


  // Display the Page Number Buttons

  $itemCount = dbGetRow($itemRecordset);
  $pagesNeeded = ceil(($itemCount[0] / $displayLimit));
  $currentPage = 1;

  // Display the first page number (if required)
  if ($pagesNeeded > 1)
  {
    if ((($currentPage - 1) * $displayLimit) == $rowStart)
    {
      print $currentPage;
    }
    else
    {
      print '<a href="' . $linkName . '?s=' . (($currentPage - 1) * $displayLimit) . '">' . $currentPage . '</a>';
    }
  }

  // Display the rest of the page number (if required)
  while ($currentPage < $pagesNeeded)
  {
    $currentPage++;
    if ((($currentPage - 1) * $displayLimit) == $rowStart)
    {
      print $currentPage;
    }
    else
    {
      print '<a href="' . $linkName . '?s=' . (($currentPage - 1) * $displayLimit) . '">' . $currentPage . '</a>';
    }
  }


  // Display the Next Button
  if (($rowStart + $displayLimit) / $displayLimit < $pagesNeeded)
  {
    print ' <a href="' . $linkName . '?s=' . ($rowStart + $displayLimit) . '">Next</a>';
  }
  
  print '</div>';
}




// **** blockBookFormats Function ****
// Input: doc_id
// Output: Floating div with list of formats available.
// Description: Gets list of all formats for current book.
// Sorted By: Alphabetical Order
function blockBookFormats($doc_id)
{
  if (!$doc_id == '')
  {
  ?>
        <div class="sidebartitle">
          Also available in...
        </div>
        <div class="sidebaritems">
          <?php
            $formatList = getBookFormatList($doc_id);
            if (!$formatList == '')
            {
              while ($format = dbGetRow($formatList))
              {
                print '<img src="images/' . $format[0] . '.gif" align="middle" alt="' . $format[1] . '"> <a href="display.php?d=' .
                 $doc_id . '&f=' . $format[0] . '">' . $format[1] . ' Version</a><br />';
              }
            }
          ?>
        </div>
  <?php
  }
}




// **** blockAuthorBooks Function ****
// Input: doc_id
// Output: Floating div with list of the author's other books.
// Description: Gets list of all other books of the author.
// Sorted By: Alphabetical Order
function blockAuthorBooks($doc_id)
{
  if (!$doc_id == '')
  {
    $bookList = getAuthorOtherBookList($doc_id);
    if (!$bookList == '')
    {
      if ($book = dbGetRow($bookList))
      {
        print '<div class="sidebartitle">Books by ' . $book[5] . ' ' . $book[4] . '</div>';
        print '<div class="sidebaritems">';
        print '<a href="display.php?d=' . $book[0] . '" target="_blank">' . $book[1] . '</a><br />';
        while ($book = dbGetRow($bookList))
        {
          print '<a href="display.php?d=' . $book[0] . '" target="_blank">' . $book[1] . '</a><br />';
        }
        print '</div>';
      }  
    }
  }
}
?>